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13 Cards in this Set
- Front
- Back
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What are the functions of the periodontal files (5) |
Used for preparing calculus Used on enamel Can fit in areas other instruments can't for tenacious calc Smoothing overhang amalgams Roughened burnished calc |
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Should periodontal files be used across the entire dentition |
No Last resort only |
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Files have been replaced by what |
Ultrasonic devices |
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When would a file be better than an ultrasonic |
Has more organized motion People may be sensitive to water Burnished calc |
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what are the specific design characteristics for a perio file |
Resembles an instrument with several sickle scalers stacked on each other Cutting edges are at 90-105 degree angle to the base Side opposing the cutting surface is smooth for non-traumatic instrumentation Rigid shank- allowing for a level of tactility |
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Describe the two point contact |
first point: face of the file against the calc Second point: Lower shank of file guiding against the tooth of the same surface (used for stability) |
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what is the purpose or advantage to the two point contact |
Miminzes the chances of trauma to the cementum or soft tissue Allows for more control strokes Increased leverage/ effectivness |
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Name the 3 files we use |
Hirschfield 9/10: Facial/Lingial anterior Hirschfield 3/7: Facial/ Lingual Posterior Hirschfield 5/11: Distal/ Mesial Posterior |
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ADVANCED PROBING TECHNQUES |
/................... |
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Discuss the difference between horizontal and vertical mobility |
Horizontal: Facial-Lingual movement Vertical: Ability to depress |
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What are the three classifications of mobility |
Class I- slight mobility 1mm horizontal Class II- Moderate mobility greater than 1mm but less than 2mm horizontal movement Class III- Severe mobility Greater than 2mm horizontal or any vertical displacement |
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Describe the four classifications of furcation involvement |
Grade I= Concavity is detcted Penetration no more than 1mm Grade II= Concavity is penetrated Greater than 1mm Grade III= Measured from the buccal to determine extent Grade IV= Furcation is visible clinically |
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For maxillary molars what makes it a class III furcation |
Probe passes between the buccal roots and touches the palatal root |
